That's only true for reproducible "random" systems, like passwords. Creating something random as a human is very easy: if I draw something on a piece of paper, scan it, and hash it, there's no way anyone (including me) can ever reproduce it! Doesn't that make it random?

In fact, I think it's harder for a computer: I've seen (old) computers that started with the same "random" number after each reboot, because they had nothing "random" in there. Any kid with a pencil creates random data if you look close enough.